This post is really for my husband, but I'm interested, too...
Tell me about ethanol, please? Or, at least link me to a comprehensive site about it?
See, we've heard that they're raising the level of ethanol in gasoline. Now, that's a great thing for the environment (a "cleaner burning fuel made from corn," right?) and all, but is it really good for the cars? Because our vehicles (2000 Chevy ZR-2 p/u and 2000 Jeep Cherokee Sport, respectively) were not necessarily made with ethanol in mind.
Does it affect the car's performance/fuel consumption/HP, etc? Does it have any effect on how often the oil has to be changed or other maintenance performed, etc?
Help me! I am knowledgeless on this subject!

I found one interesting article that talks about how a molecular geneticist modified genes of certain kind of yeast to change sugars found in specific plant matter, into ethanol.

Here is another site that goes into detail as to what it is, how it is produced and pros and cons.

The only thing I have found so far is that is reduces mileage per gallon.

Well, according to Kevin McNew, associate professor in the Department of Agriculture at MSU in Bozeman,at this point in time, ethanol serves as a fuel additive, not as an eventual replacement for gasoline. “Ethanol isn’t the fuel of the future and it isn’t the answer to the oil crisis,”

Here is another informative site. A quote And although ethanol can be used as a fuel itself -- many cars and pickup trucks on the road today can perform using 85 percent ethanol -- it has its own problems. On its own, ethanol absorbs water in the air, easily evaporates and performs poorly in cold temperatures whether its in gasohol, a fuel with 10 percent ethanol, or E85, gasoline with 85 percent ethanol.

Ethanol also breaks down rubber seals wherever it comes in contact. It does not contain nearly as much energy as gasoline which is why performance and mileage are affected. The primary reason for using it as a "blend" is to extend the amount of fuel reserves. Rather dubious, in my opinion, since it take more of it. All in all, it's just not a good thing.

And by the way, many current automobiles actually emit cleaner air than they take in. So, in some cases, cars are actually cleaning up the atmosphere.

I just know I'm gonna hafta reply to this in a big way.

The misinformation available out there is staggering. Fortunately, so is accurate information. I shall try to set aside some time to put together a short fact sheet regarding this subject during the upcoming week. (I thought I was retired from this!)